公开(公告)号：US12104508B1

公开(公告)日：2024-10-01

申请号：US18710730

申请日：2022-11-15

申请人： COSCO SHIPPING MARINE EQUIPT & SPARES (NJ) CO., LTD

发明人： Hong Lu ,  Weiwei Dai ,  Lihe Jiang ,  Guozheng Quan ,  Xiaolin Zhang

IPC分类号： C22C19/05 ,  B21J5/02 ,  C22F1/10 ,  F01L3/02

CPC分类号： F01L3/02 ,  B21J5/02 ,  C22C19/058 ,  C22F1/10

摘要： Provided are a large-size diesel exhaust valve and a manufacturing method thereof, which relate to the technical field of manufacturing of large-size diesel exhaust valves for ships. The large-size diesel exhaust valve includes an exhaust valve disc portion made of a 3J40 alloy, and the large-size diesel exhaust valve has the following microstructure: there are ultra-fine grains with a grain size of 10 grade or more, α-Cr lamellar phases are evenly distributed at grain boundaries of the ultra-fine grains, nickel-lean Cr—Al—Ce particle phases are evenly distributed in a matrix, a single lamella of the α-Cr lamellar phases has a thickness of less than 140 nm, and the nickel-lean Cr—Al—Ce particle phases have a diameter of less than 10 μm. The present application solves the technical problem of how to improve the comprehensive mechanical properties and the vibration-damping performance of a large-size diesel exhaust valve simultaneously.

公开(公告)号：US11959515B2

公开(公告)日：2024-04-16

申请号：US16968770

申请日：2019-02-13

申请人： NSK LTD.

发明人： Nobuyuki Hagiwara ,  Atsuhiro Ishii ,  Tokumasa Kikuchi ,  Tsuyoshi Kamoda

IPC分类号： B21J13/08 ,  B21D39/00 ,  B21J5/02 ,  B21J9/02 ,  B21K19/00 ,  B21K25/00 ,  B21K27/00 ,  B23P19/00 ,  B23P21/00 ,  B65G35/00 ,  F16C19/18 ,  B62D65/12 ,  F16C35/063

CPC分类号： F16C19/186 ,  B21D39/00 ,  B21J5/02 ,  B21J9/02 ,  B21J9/025 ,  B21J13/08 ,  B21J13/085 ,  B21K25/00 ,  B23P19/00 ,  B23P21/00 ,  B65G35/00 ,  B62D65/12 ,  F16C35/063 ,  F16C2326/02

摘要： A moving element (21) holding a workpiece (a hub unit bearing (1)) is horizontally loaded into an internal space (23) of an exterior (17) from an external space of the outer package (17), while being guided by a guide member (20) through an opening portion (a front surface side opening portion (25)) provided in the exterior (17) constituting a rotary forging apparatus (16). After completion of the loading process, the workpiece is subjected to rotary forging, using a forming die (18).

公开(公告)号：US20180326472A1

公开(公告)日：2018-11-15

申请号：US15566224

申请日：2017-04-14

申请人： Jilin University ,  Qingdao Zhongtianpeng Forging Manufacturing Co., Ltd.

发明人： Qingmin CHEN ,  Yan YUE

IPC分类号： B21J5/02 ,  B21J13/02 ,  B21K7/12 ,  C21D9/00 ,  C21D1/18

CPC分类号： B21J5/025 ,  B21J5/02 ,  B21J13/02 ,  B21J13/025 ,  B21K7/12 ,  C21D1/18 ,  C21D9/0068

摘要： The present invention provides a method of near-net-shape forged molding of the coupler knuckle of the railway vehicle. The present invention solves the problems that the manufacturing the forged coupler knuckle is difficult, and the process is complex, etc. The method of the present invention includes the following steps: material preparation, heating, blank prefabrication, pre-forging, closed-die forging, quenched-tempered heat treatment using waste heat, finish machining, flaw detection, etc. With the closed-die forging technology, the near-net-shape molding of the coupler knuckle can be achieved. The energy and the material are saved. The contour shape and the size do not need to be machined. The use ratio of the material can reach more than 92%. Moreover, during the entire molding, the workpiece is in the three-dimensionally stressed state all the time. The product has a dense texture, a high toughness, a good fatigue resistance, and a long lifetime.

公开(公告)号：US20180169742A1

公开(公告)日：2018-06-21

申请号：US15574945

申请日：2016-05-19

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Tomohisa YAMASHITA ,  Kunihiro YABUNO ,  Ken YOSHINO ,  Sho TAKAMOTO ,  Hiroyuki KUROKAWA ,  Kenji TAMURA ,  Junichi OKUBO ,  Kiyoshi NAKAYAMA ,  Toru HORIUCHI

IPC分类号： B21K1/08 ,  B21J5/02 ,  F16C3/08

CPC分类号： B21K1/08 ,  B21J5/02 ,  B21J5/025 ,  F16C3/08

摘要： A forged crankshaft manufacturing apparatus processes a forged blank with no flash. The forged blank includes at least one rough crank arm having an excess portion protruding from an outer periphery of a side portion thereof. The manufacturing apparatus includes a first die and a second die paired with each other, a retaining device, and a moving device. The first die and the second die bend or crash the excess portion. The retaining device retains at least one of the rough journals or at least one of the rough pins such that a rough pin decentering direction is perpendicular to a reducing direction in which the first die and the second die apply force for reduction. The moving device supports the retaining device such that the retaining device is movable in the reducing direction.

公开(公告)号：US20180078994A1

公开(公告)日：2018-03-22

申请号：US15531788

申请日：2015-12-10

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Kenji TAMURA ,  Junich OKUBO ,  Ken YOSHINO ,  Kunihiro YABUNO ,  Hiroyuki KUROKAWA ,  Tomohisa YAMASHITA ,  Sho TAKAMOTO ,  Koichiro ISHIHARA

IPC分类号： B21J5/02 ,  F16C3/08 ,  B21K1/08

CPC分类号： B21J5/02 ,  B21K1/08 ,  F16C3/08

摘要： A method for producing a forged crankshaft includes a die forging step of forming a forged blank having a crankshaft shape by die forging, and a pressing step of pressing the forged blank by a first dies. The forged blank includes first excess portions attached to some or all of crank arms each incorporating a counterweight, each of the first excess portions protrudes from a side portion of the crank arm, in a region near a journal. In the pressing step, the first excess portions are deformed by the first dies such that each of the first excess portions bulges toward a pin. This facilitates the production of a forged crankshaft with a reduced weight and assured stiffness.

公开(公告)号：US09827607B2

公开(公告)日：2017-11-28

申请号：US14718224

申请日：2015-05-21

申请人： AISA VITAL COMPONENTS CO., LTD.

发明人： Kuo-Sheng Lin ,  Fei-Fei Shi

IPC分类号： B21J5/06

CPC分类号： B21J5/06 ,  B21D22/06 ,  B21D51/52 ,  B21J5/02 ,  B21J13/025 ,  B21K1/76

摘要： A mold for molding a case of a mobile device includes a first, second, third, fourth and fifth main body, connection slide blocks, and first and second abutment slide blocks. The connection slide blocks and the second abutment slide blocks are inlaid in first and second slide channels of the first and second main bodies. The first abutment slide blocks are inlaid in channels of the connection slide blocks. The third, fourth and fifth main bodies are horizontally movable relative to the first and second main bodies. The first and second main bodies, the connection slide blocks and the first and second abutment slide blocks together define a male mold section and the third, fourth and fifth main bodies together define a female mold section. A metal thin sheet is placed on the male mold section and pressurized and molded by the female mold section to form the case.

公开(公告)号：US20170297080A1

公开(公告)日：2017-10-19

申请号：US15507610

申请日：2015-08-27

申请人： Hitachi Metals MMC Superalloy, Ltd. ,  HITACHI METALS, LTD.

发明人： Yuji ISHIWARI ,  Jun OHSONE

IPC分类号： B21H1/06 ,  B21J5/02 ,  B21K1/32 ,  F01D5/02

CPC分类号： B21H1/06 ,  B21B5/00 ,  B21B15/00 ,  B21J5/02 ,  B21J5/025 ,  B21K1/32 ,  B21K1/761 ,  B21K21/06 ,  F01D5/02 ,  F02C7/00 ,  F05D2230/25 ,  F05D2230/26

摘要： A ring molded article manufacturing method capable of reliably and efficiently producing a ring molded article in which dead metal regions are reduced, is provided. In the present invention, a material is processed by first forging so as to be shaped in a shape including a bottom which is formed in a substantially disk shape, and a peripheral wall which is inclined to a direction from a center of the bottom toward an outer periphery thereof, in a direction from the outer periphery of the bottom toward one side in a direction of a center axis of the bottom, the bottom of a first forged article obtained by the first forging is drilled, a drilled article obtained by the drilling is ring-rolled, a ring material obtained by the ring rolling is placed inside two molds, the ring material is then processed by second forging so as to be pressed by the two molds in a direction of a center axis of the ring material, and the ring molded article is thus produced.

公开(公告)号：US09724749B2

公开(公告)日：2017-08-08

申请号：US14613918

申请日：2015-02-04

申请人： ROLLS-ROYCE PLC

发明人： Michael John Gallagher ,  John McBain

IPC分类号： B21J5/02 ,  B21D24/16 ,  B21J5/00 ,  B21K3/04 ,  B23D43/02

CPC分类号： B21J5/027 ,  B21D24/16 ,  B21J5/002 ,  B21J5/02 ,  B21K3/04 ,  B23D43/02 ,  Y10T409/400175 ,  Y10T409/40175 ,  Y10T409/402625

摘要： The present disclosure provides a clipping tool for clipping flash from a component e.g. a gas turbine aerofoil body. The clipping tool includes a riser having a support surface for supporting the component and a punch for gripping the component on the support surface such that the flash projects laterally from the riser and the punch. The clipping tool further comprises a tool body having a clipping aperture opening to a channel within the tool body. The channel is defined by a channel wall. The riser and the punch are translatable to shear the projecting flash from the gripped component. At least a portion of the channel wall within the tool body comprises a broaching surface having at least one projection, said projection reducing the cross sectional area of the channel to less than that of the clipping aperture.

公开(公告)号：US09719369B2

公开(公告)日：2017-08-01

申请号：US14778021

申请日：2014-03-18

申请人： HITACHI METALS, LTD.

发明人： Tetsuya Yagami ,  Toshiya Teramae ,  Etsuo Fujita ,  Shinya Nagao ,  Remi Mukouse ,  Naoyuki Iwasa ,  Tsuyoshi Fukui ,  Chuya Aoki

IPC分类号： F01D25/00 ,  B21J1/02 ,  B21J5/02 ,  B21H1/06 ,  C22C19/05 ,  B21K1/76 ,  F01D5/06 ,  B21B45/00 ,  B21D19/04 ,  F01D5/02

CPC分类号： F01D25/005 ,  B21B45/004 ,  B21D19/04 ,  B21H1/06 ,  B21J1/02 ,  B21J1/025 ,  B21J5/02 ,  B21J5/022 ,  B21K1/761 ,  C22C19/05 ,  C22C19/055 ,  C22C19/056 ,  C22F1/10 ,  F01D5/02 ,  F01D5/06 ,  F05D2220/32

摘要： A manufacturing method provides a high-quality material for ring rolling. The manufacturing method of the material for ring rolling includes a step of heating a disk-shaped material for hot forging to a hot working temperature, a step of arranging the material for hot forging onto a lower die having a convex portion with a truncated conical shape, a step of forming a thin portion by pressing a center portion of the material for hot forging by using an upper die having a convex portion with a truncated conical shape, and a step of manufacturing a material for ring rolling by removing the thin portion wherein a center of gravity on a half section of the material for ring rolling is located so as to be closer to an outer peripheral surface of the half section than a center of the half section in a thickness direction of the half section.

公开(公告)号：US20170107601A1

公开(公告)日：2017-04-20

申请号：US15129078

申请日：2015-02-13

申请人： Ulrich BRUHNKE

发明人： Ralf ANDERSECK ,  Andreas JAEGER ,  Karl-Heinz LINDNER

IPC分类号： C22F1/06 ,  B21C23/00 ,  B21D22/02

CPC分类号： C22F1/06 ,  B21C23/002 ,  B21C35/023 ,  B21D22/022 ,  B21J1/06 ,  B21J5/02 ,  B21J15/00

摘要： The invention for working extruded profile sections with respect to the outer contours thereof by way of hot shaping and/or hot stamping and/or cutting operations and/or punching operations comprises the following method steps:—inserting the profile sections (1) heated to a temperature in the range of 250 to 450° C. into a two-part shaping tool (2) preheated to a temperature of 300 to 600° C.; and—applying pressure to the shaping tool (2) by way of one or more pressing cylinders (3) of a press (4). The device for carrying out the method comprises a press (4) and a shaping tool, wherein the shaping tool (2) is formed of two tool halves I, II, which are displaceable with respect to each other, and between which the profile section (1) is inserted.